Miscellany

[root@localhost mysql-2.7]# ruby extconf.rb .with-mysql-config=/usr/bin/mysql_config
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... yes
checking for mysql_query() in -lmysqlclient... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
     --with-opt-dir
     --without-opt-dir
     --with-opt-include
     --without-opt-include=${opt-dir}/include
     --with-opt-lib
     --without-opt-lib=${opt-dir}/lib
     --with-make-prog
     --without-make-prog
     --srcdir=.
     --curdir
     --ruby=/usr/local/bin/ruby
     --with-mysql-config
     --without-mysql-config
     --with-mysql-dir
     --without-mysql-dir
     --with-mysql-include
     --without-mysql-include=${mysql-dir}/include
     --with-mysql-lib
     --without-mysql-lib=${mysql-dir}/lib
     --with-mysqlclientlib
     --without-mysqlclientlib
     --with-mlib
     --without-mlib
     --with-mysqlclientlib
     --without-mysqlclientlib
     --with-zlib
     --without-zlib
     --with-mysqlclientlib
     --without-mysqlclientlib
     --with-socketlib
     --without-socketlib
     --with-mysqlclientlib
     --without-mysqlclientlib
     --with-nsllib
     --without-nsllib
     --with-mysqlclientlib
     --without-mysqlclientlib